代码如下：

#include<iostream>
#include<map>
#include<cmath>
using namespace std;
long long a,b,n,i,j;
map<int,int>c;
int main(){
	cin>>n;
	cin>>b;
	for(i=2;i<=n;i++){
		cin>>a;
		if(abs(a-b)>=1&&abs(a-b)<=n-1){
			c[abs(a-b)]=1;
		}
	}
	if(c.size()==n-1) cout<<"Jolly";
	else cout<<"Not jolly";
	return 0;
}